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Sergeu [11.5K]
2 years ago
15

Simplify 7(x + 3). 7x + 3 7x + 21 Ox+ 21 07x + 10

Mathematics
1 answer:
Elena-2011 [213]2 years ago
8 0

Answer:

The answer is 7x+21

Step-by-step explanation:

You just multiply 7 by both x and 3 but keep them separate

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A child is hopping along a sidewalk. The ratio table below shows the comparison between the number of hops and the distance trav
natima [27]
First we rewrite the table:
 20    30
 50    75
 80    120
 150   ?
 We observe that for each 30 number of hops, the distance increases by 45 feet.
 We must find the slope of the line:
 m = (y2-y1) / (x2-x1)
 m = (75-30) / (50-20)
 m = 1.5
 Then, the line is:
 y = 1.5x
 We substitute x = 150
 y = 1.5 * (150)
 y = 225
 Answer:
 
Find the ratio of hops to distance traveled (1: 1.5), then multiply 150 by 1.5.
3 0
3 years ago
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natima [27]

Answer: its b

Step-by-step explanation:

5 0
2 years ago
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Solve −4 = −(−k − 86)+10
kvasek [131]
K= 100
 
You use distributive property 
<span>
Step 1: </span><span>−(−k)−1(−86)+10=−4

Step 2: </span><span>k−1(−86)+10=−4

Step 3: </span><span>k+86+10=−4

Step 4: </span><span>k+96=−4

Step 5:  </span><span>k=−96−4

Step 6:  </span><span>Subtract </span>4<span> from </span><span>−96</span><span> to get </span><span><span><span>−100</span>.</span></span>
3 0
3 years ago
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Factor and simplify 8cos^2x+cosx-9
KonstantinChe [14]
HELLO DEAR,




GIVEN:-
8cos²x + cosx - 9

8cos²x + 9cosx - 8cosx - 9

cosx(8cosx + 9) - (8cosx + 9)

(cosx - 1)(8cosx + 9)


I HOPE ITS HELP YOU DEAR,
THANKS
3 0
3 years ago
How many times bigger is 1.8x10^27 than 1x10^25
victus00 [196]
To find the number of times it is bigger

= \dfrac{1.8 \times 10^{27} }{1 \times 10^{25}}

= 1.8 \times 10^{27-25}

= 1.8 \times 10^{2}

= 180 \text { times}
3 0
3 years ago
Read 2 more answers
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